| 摘要 |
PROBLEM TO BE SOLVED: To provide a bridge having two main girder cross sections equipped with wind resistant stability. SOLUTION: The bridge having two main girder cross sections is equipped with two main girders 5 extended in approximately parallel with the direction of a bridge axis, a floor slab 3 supported by these main girders 5 and the center barrier 7 erected on the central part of the floor slab 3 by extending in the direction of the bridge axis, and in the bridge 1 having two main girder cross sections arranged inward from the side sections of the floor slab 3, each main girder 5 is so characterized that the ratio of a height h of the center barrier 7 to a dimension D adding the height hh of the floor slab 3 to the height H of the main girder 5 is at least 0.23, preferably at least 0.31. COPYRIGHT: (C)2006,JPO&NCIPI
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